[fix] issues when launching a local development server

A local development server can be launched by one of these command lines::

    $ flask --app searx.webapp run
    $ python -m searx.webapp

The different ways of starting the server should lead to the same result, which
is generally the case.  However, if the modules are reloaded after code
changes (reload option), it must be avoided that the application is initialized
twice at startup.  We have already discussed this in 2022 [1][2].

Further information on this topic can be found in [3][4][5].

To test a bash in the ./local environment was started and the follwing commands
had been executed::

    $ ./manage pyenv.cmd bash --norc --noprofile
    (py3) SEARXNG_DEBUG=1 flask --app searx.webapp run --reload
    (py3) SEARXNG_DEBUG=1 python -m searx.webapp

Since the generic parts of the docs also initialize the app to generate doc from
it, the build of the docs was also tested::

    $ make docs.clean docs.live

[1] https://github.com/searxng/searxng/pull/1656#issuecomment-1214198941
[2] https://github.com/searxng/searxng/pull/1616#issuecomment-1206137468
[3] https://flask.palletsprojects.com/en/stable/api/#flask.Flask.run
[4] https://github.com/pallets/flask/issues/5307#issuecomment-1774646119
[5] https://stackoverflow.com/a/25504196

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

1 files changed, 0 insertions, 16 deletions

diff --git a/searx/webutils.py b/searx/webutils.py
index 6e49e3830..2a2da3797 100644
--- a/searx/webutils.py
+++ b/searx/webutils.py
@@ -9,7 +9,6 @@ import csv
 import hashlib
 import hmac
 import re
-import inspect
 import itertools
 import json
 from datetime import datetime, timedelta
@@ -316,21 +315,6 @@ def searxng_l10n_timespan(dt: datetime) -> str:  # pylint: disable=invalid-name
     return format_date(dt)
 
 
-def is_flask_run_cmdline():
-    """Check if the application was started using "flask run" command line
-
-    Inspect the callstack.
-    See https://github.com/pallets/flask/blob/master/src/flask/__main__.py
-
-    Returns:
-        bool: True if the application was started using "flask run".
-    """
-    frames = inspect.stack()
-    if len(frames) < 2:
-        return False
-    return frames[-2].filename.endswith('flask/cli.py')
-
-
 NO_SUBGROUPING = 'without further subgrouping'